Photographic Guide of Selected External Defect Indicators and Associated Internal Defects in Yellow-poplar
Everette D. Rast
Jan 1991 · U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station
Ebook
29
Pages
About this ebook
S2To properly classify or grade logs or trees, one must be able to correctly identify indicators and assess the effect of the underlying defect on possible end products. This guide assists the individual in identifying the surface defect indicator and shows the progressive stages of the defect throughout its development for yellow poplar. Twelve types of external defect indicators and associated defects that are particularly difficult to evaluate are illustrated and described. S3.
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